Ball-cock-valve silencer



Feb. 26, 1929.

M. CARY, JR

BALL COCK VALVE SILENCER Filed Aug. 1927 Patented Feb. 26,1929. 1 I 1,703,295

" UNITED STATES PATENT oO FFICE]. wrLsoN MILES oAaY, an or BALTIMORE, MARYLANJVQJ, ASSIGNOR '10 McsHANE BEITL FOUNDRY COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION or MARYLAND.

' BALL-cocK-vALvE SIlLENCER.

Application filed August 2, 1927. Serial N 0. 210,037.

In the operation of the ball cock valves 1 including a plan view of the silencer valve 50 of flush tanks and the like, the Objectionable seat. whistling sound which occurs just prior to Referring to the drawings by numerals, the final and complete closure of the valve as each of which is used to indicate the same the float approaches full position is familiar or similar parts in the different figures, the

to all, and numerous attempts have been illustration includes more or less fragmen- 55 made to overcome this difficulty or defect. tarily'a flush tank 1 to which water under The invention relates to the provision supply pressure is led from a suitable source of a silencer valve in the water supply pipe; by way of water supply pipe 2, 32 the ad- 7 This valve is opened by the pressure of the mission of water from the supply pi e to preferred form.

water supply" when the ball cock valve is the tank being controlled by means 0 ball wide open on account'of the release of'the cock valve 3 cooperating with ball cock water from the tank, and as the ball cock valve seat 4, the ball cock valve being opvalve approachesclosed osition the silencerated by link and lever system 5 of any 15 ing valve closes to a su cient extent to cut preferred type, the operation of the link down the pressure of the water by throttling and lever system shown being obvious and and reducing'the velocity of flow between also familiar to those skilled in the art.

the ball cock valve and its seat, whereby the This link and lever system is, in turn,

whistling effect is completely eliminated. controlled by a float or ball 6 connected to 20 In the preferred form of the invention the the upper arm 7 of the link and lever syssilencer or check valve seat isscored slightly, tem by a ball or float arm 8 which acts as the score marks being exceedingly fine so as an extension of the lever arm 7. The upper to provide for a minute seepage past the arm 7 is pivoted on a suitable upright silencer valve in the position which it 'asbracket at 9* and is connected at its end 10 25 sumes when'the tank is almost full and the remote from the ball 6 and beyond the pivot ball cock valve almost closed, whereby the by a suitable connecting link 11 to the final level of the tank is reached by a gradual corresponding end of a lever 12 which is influx of water, the pressure'between the sipivoted to a stationary. bracket at its oplencer valve and the ball cock valve being posite' end at 1'4 extending intermediately' A 30 thus reduced,-giving a'consequen't'reduction through a slot 15 in the upright stud'16 of the velocity of the water as it passes 'becarrying the ball cock valve 3, the same between the ball cock valve and its seat and, ing,'in the formlshown, guided by a central as aforesaid, a complete elimination of the cylindrical guiding portion 18 which has a objectionable noise. loose sliding fit in a guide bearing 19 above 35 In'the accompanying drawings I have ilthe valve seat 4:.

lustrated fragmentarily a ball cock valve for The silencer valve'20 is located or inserted flush tanks and the like equipped with a in a suitable casing 22 inthe water pipe 2, silencer valve in accordance with my inven- 32 between the supply and the ball cock tion in what is at present regarded as the valveB. The silencer valve 20 is shown in I the form of a poppet valve which cooperates In the drawings: v i with a seat 21in said casing 22 in the posi- Figure' 1 is a vertical central section tion already indicated. through the ball cockvalve and silencer The casing-22 is formed in any suitable valve on a plane of the axis, the ball float manner whereby it may be inserted in pipe I 45 and link motion being shown in elevation, 2, 32 intermediately thereof and is provided the float ball arm being-broken away to inwith suitable guides 24 below and 25 above cheats indefinite length for convenience of, the seat, 7 These, as shown, are cylindrical illustration. guiding surfaces formed in the body of'the Figure 2 is a section on line2-'-2 of Figure casing and the valve is provided with guide remain in contact with its seat is imparted thereto by a short helical spring 28 coiled about the upper guiding member 26 and v bearing at its lower end against the top surface of the valve and at its upper end against the lower surface of an abutment 29 extending across the cavity of the valve casing and in which the guide bearing surface 25 is formed. 7

The silencervalve is moved to throttling position near or in contact with its seat by the spring 28, assisted by the back pressure in the upper pipe section 32 beyond the silencer valve as the ball cock valve approaches closed position.

In operation the valve is guidedin the direction of the axis of the chamber to and from its seat by the guide members 26 and 27 cooperating with guide bearing surfaces 24 and 25 and is normally, i. e., in the closed position of the ball cock valve, held in close contact with its seat by the spring 28. When the water is released from the tank and the ball cock valve 3 is opened by the depression of the float or ball 6, the pressure of the water supply to which the spring of the silencer valve 20 is adjusted, opens the silencer valve 20 and the water supply flows freely through the pipe 2 between the valve seat 21 and the silencer valve 20 and into the tank by way of the ball cock valve. As the level of the water in the tank rises and approaches the full condition, the ball 6 being raised to a position approaching the closed position, the ball cock valve 3 comes nearly in contact with its seat, and the final completion of the filling of the tank from this position of the parts requiresfa relatively small quantity of water.

It will be understood. that the water flows freely from the ball cock valve by Way of any suitable passage, as the pipe 31, so that the ball cock valve, in effect, discharges into the atmosphere and the escape of the water under considerable pressure through the small orifice between the ball cock valve 3 and the seat as the valve approaches closed position, results in the objectionable hissing or whistling noise described.

This objectionable whistling is eliminated by the silencer valve which, while it opens freely to permit the full supply of water to pass when the ball cock valve is wide open, has a throttling effect reducing the pressure of the water between the silencer valve and the ball cock valve when the latter approaches seating position, i. e., the pressure of the spring 28 urging the silencer valve toward its seat cuts down the flow of water past the ball cock valve so that it is less than that which would be normally passed by the ball cock valve in the closing position of the latter, so that the velocity at this point is greatly reduced and there is no high speed flow of the water through anarrow orifice in the ball cock valve, which has resulted in the objectionable hissing or whistling, the objectionable feature being thus overcome. v

I have thus described specifically and in detail a single embodiment of my invention in order that the nature and operation of the same may be clearly understood, however, the specific terms herein are used descriptively rather than in a limiting sense, the scope of the invention being defined in the claims. 7

What I claim as new and desire to secure by Letters Patent is r 1. The combination with a ball .cock valve for flush tanks of a supply pipe leading water underpressure to the tank by way of the ball cock valve, and a silencer valve in said pipe between theball cock valve and the supply, said silencer valve being in the form of a poppet valve opening in the direction of flow, a seat therefor and a spring tending to close said valve against the W lter pressure, the sprin being of such strength as to be overcome .by the Water pressure when the ball cock valve is open.

2. The combination with a balljcock valve for flush tanks of a supply pipe leading water under pressure to the tank by way of the ball cock valve, and a silencer valve in said pipe between the ball cock valve and the supply, said silencer valve being in the form of a poppet valve opening in the direction of flow, a seat therefor and means tending to close said valve againstythewater pressure, said means being of such strength as to be overcome by the water pressure when the ball cock valve is open. 7

3. The combination with a ball cock valve for flush tanks of a supply pipe leading water under pressure to the tankby way of the ball cock valve, and a silencer valve in said pipe between the ball cock valve and .the supply, said silencer valve being in the form of a poppet valve opening in the direction of flow, a seat therefor and a spring tending to close said valve against the water pressure, the valve and seat constituting flow to provide for the passage of a small quantity of fluid when the valve is in contact with its seat.

4. The combination with a ball cock valve I for flush tanks of a supply pipe leading water under pressure to'the tank by way of the ball cock valve, and a silencer valve in said pipe between the ball cock valve and 1 form of a poppet valve opening in the direc- .this 22nd day of July, 1927. the supply, said silencer valve being in the tion of flow, a seat therefor and a spring Signed by me at Baltimore, Maryland, I

, WILSON MILES GARY, JR. 

